Automatic transmission



C. E. GREGORY AUTOMATIC TRANSMISSION l Filed July 7, 1933 2 Sheets-Shee'.

March 19, 1935.

March 19, 1935. c. E. GREGORY AUTOMATIC TRANSMISSION I Filed July 7. 1933 2 Sheets-Sheet 2 .z-zr/En/cyr Chf/@n ES ff 5ms-@anx /j/illlll PatenteclI-Mar, y19, 1935l l l. l A i I UNITED STATESr PATENT FFICEVA I ,sisiiani Y x Y AUTOMATIC TRANSMISSION Y y CliarleslEl Gregory, Chicago, Application July` 7, 193s, serial No. 679,298

` i' 7 crains. (o1. #x4- 259) This invention relates to a transmission inone of the clearances 14. l By turning the bearing `volving a driven member, a driving member and in the other direction, the otherclearance will an eccentrically mounted member between` the be taken up. driven and driving member and 'concerns `:itself Assuming that the parts are in the `position Y 5 primarily with means ,for relatively shifting eer- Y shown in Fig. 2z and power is applied for rotating 5 tain parts to prevent the driving member `from theI pinion 10 in the direction' indicatedby Vthe traveling in an orbit. arrow thereon. This operation will tend to rotate The invention comprises the novel structure '1 the ring gear 11 in the direction indicated by the and combination of parts hereinafter described arrow thereon, and Cause the bearing 12 to Shift l and more particularly pointed out and defined in from the position Shown in Fig- 2 to the position 10 the appended claims. shown in Fig. 3 and as indicated by the lines a--a In the accompanying drawings which illustrate and b-b in Fig. 3, due to the Cleoronoe 14 upon a preferred form of this invention and in which the right Side In this position of the ports, the similar reference numerals refer to similar feapinion iS looked against bodily rotation in on 15 tures in the different views: orbit to the right, it can, however, rotate upon its 15 Figure 1 is a sectional View of the transmission aXiS o1' bodily rotate toWard the leftinvolving this invention. For it will be evident that the center C ofthe Figure 2 is an enlarged sectional view 0f the bearing 12 in its shifted position is nearer to the transmission taken upon the line II-II of Fig. axis 0f the pinion 10 than it Was in its Original 1 looking in the direction of the arrows, position, thereby causing the ring gear 11 to bind 20 Figure 3 is a view similar to Fig, 2 but upon against the pinion 10.` 'In other words, the shifta reduced scale showing parts in a different posiing of the bearing 12 SIS Soon aS the pinion 10 tion. starts to rotate, brings a deeper portion of the Figure 4 is an enlarged sectional View taken ring gear l1 to the right of Suoh pinion 10 and upon the line IV-IV of Fig.1looking in the direcprevents bodily rotation of Suoll pinion to the 25 tion of the arrows. right in an orbital path.

Figure 5 is a reduced sectional view taken upon There are, looWeVer, times When the pinion 10 the line V-V of Fig. 2 looking in the direction of Will loodily InoVe toward the left- There are also the arrows. f times when the gear assembly will rotate as a unit In the drawings, there is shown a driving Shaft as will now be set forth. Under maximum load, 30 1 having a gear 2 keyed thereon which is adapted vtl'le pinion l0 Will rotate ring gear 11 So that the to drive a driven memberA 3, as'will later more torque Will be multiplied for driving gear 3- AS fully appear. The driven member 3 is in the the maximum load decreases and approaches the form of an internal gear having a hub 4 in which torque, the pinion 10 Will InoVe relative to the the inner end of the driving shaft is journalled. ring gear and When the lood equals the torque, 35 The hub 4 is journaued in a bearing 5 which is the gear assembly will rotate as a unit. Thus it integral with a casing 6 surrounding the trans- Will be Seen thettlle torque iS loolanoed loy Such mission. loads as can be moved by the engine or source of The aforementioned gear 2 meshes with a gear DOWer that operates the tronSiniSSion- 40 '7 keyed upon a shaft 8 which is journalled in a l. om oWore that many ChongeS may be made 40 bearing disk 9 journaued upon the shaft 1. A and numerous details of construction may be driving gear 10 is secured upon the inner end of ,Varied through a Wide range Without departing the shaft 8 upon the opposite side 0f the disk from the principles of this invention, and I, thereand meshes with an eccentrically mounted ring fore, do not purpose limiting the potent granted gear 11 journalled upon an eccentri@ bearing 12 hereon otherwise than necessitated by the prior 45 carried by a disk 13 journalled upon the Vshaft 1 art and having counterweights 13a thereon. It will I olaiIn aS my inVentionI be noted that the bearing 12 is eccentric with re- 1. In a transmission mechanism' a driving lation to the shaft 1 and surrounds an eccentric shaft, a gear keyed thereon, a disk loosely mountbearing 9a on the disk 9. With reference to Fig. 2 ed upon said shaft, a shaft journalled in and ex- 50 it will be noted that there is a clearance 14 betending thru said disk, a gear secured upon one tween the bearing 12 and the bearing 9a upon end of said shaft and meshing with/the first meneach side of the bearing 9a allowing the b'eartioned gear, a pinion secured upon the other end ing 12 to rock or turn from the position shown in of said shaft, said disk having an eccentric bear- Fig. 2 to the position shown in Fig. 3 to take up ing, an eccentric bearing, an eccentricibearing 55 ring upon said eccentric bearing and capable of being shifted relative thereto, a ring gear journalled upon said bearing ring and meshing with said pinion and an internal gear supported coaxially With said shaft and meshing with said ring gear.

2. In a transmission mechanism, a main shaft, a gear keyed thereon, a disk journalled upon said shaft, a shaft journalled in said disk, a gear upon said shaft and meshing with the first mentioned gear, a bearing having a different 'center of rotation than said shaft surrounding the same, a ring gear journalled upon said bearing, a pinion upon said second shaft for engaging said ring gear,

and an internal gear coaxially mounted with-saidmain shaft, and engaging said ring gear.

3. In a transmission mechanism, a gear having internal teeth, a ring gear mounted within said internal gear and meshing therewith, a pinion mounted exteriorly of said ring gear for orbital movement and meshing with said ringY gear and "means for causing said pinion to interlockl with said pinion for movement in an orbital path, and means for shifting said ring gear upon'the initial rotation of said pinion to cause a binding relation between said pinion and ring gear.

5. In a transmission mechanism, an internal gear, a ring gear interiorly of said internal gear and meshing therewith, an eccentric mounting extending interiorly of the ring gear, a driving pinion engaging said ring gear and a cam member within saidy mounting for, shifting said eccentric mounting. ,l y

6. In a transmission mechanism, a gear having internal teeth, a ring gear within said internal gear and meshing therewith, a pinion exteriorly 'oiesaid ringfgear and meshing therewith, means for mounting-said pinion for movement in an gear, avringgear within said'internal gearand meshing therewith, an eccentric mounting for said ring gear means for changing the eccentricity of Ysaid mounting and ajbodilyimovable pinion meshing with said ring gear.

CHARLES E. GREGORY. 

